Patent US2869073A successfully refreshed from Google Patents.
US2869073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for distinguishing harmless surface flaws from dangerous fissures in magnetizable bodies
Assignee: TELEWELD Inc
•
Filing: 1953-03-09
•
Granted: 1959-01-13
•
Expires: 1973-03-09
Abstract
No abstract record available.
Inventors
- 👤 Chester W Mckee
- 👤 Richard W Mckee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:41
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/72; G01N27/82; G01N27/90; G01N27/904
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2461252A
Cited
US2461253A
Cited
US2571998A
Cited
US2571999A
Cited
US2624779A
Cited
US2602108A
Cited
US2639316A
Cited
US2614154A
Cited
US2671197A
Cited
US2729785A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-12 | 1962-07-14 | 1963-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-12 | 1966-07-14 | 1967-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-12 | 1970-07-14 | 1971-01-13 | $7700.00 | Window Closed / Lapsed |